Tire rim



April 23, 1929. A.' FURRER TIRE RIM` Filed March 26. 1926 2 Shoet's-Sheet l Patented Apr. 23, 1929.

UNITED STATES ALBERT FURBER, 0F ZURICH, SWITZERLAND.

TIRE RIM.

Application filed March 26, 1926, Serial No. 97,569, and in Germany April 1, 1925.

The present invention relates to rims and more particularlyr to circuln'fierentially split detachable rims for pneumatic tires of' motor vehicles.

The main object of the invention to provide a rim of an improved construction which facilitates theinounting and dismounting of the tires and which shall be simple, strong and durable in construction. A further object of' the invention is to provide a rim with a ring member adapted to be fixed to the felloe and with a second ring member forming a detachable side flange, the members being provided with projections and recesses which interengage to hold the two ring members together.

Other objects of the invention relate fo the provision of" minor parts co-opcrating with the element-s above noted and to details of construction, all of `which will be more clearly set forth in the following specification.

With the above objects in view the invention resides in the parts and combination of parts hereinafter described, and particularly set forth in the claims appended hereto.

In the accompanying drawings several forms of construction are shown by way of examples.

Fig. 1 is a. cross-section through a part of the rim,

Fig. J a section on line A-ll of Fig. Il..

Fig. 3 is a side view of the rim member (l,

Fi g. Il a perspective of the rim, disassembled,

.F ig. 5 illustrates on a larger scale a part of the rim in section according to a modification or the invention,

Fig. G illustrates in a side view a part of the rim in section according to such modification;

Figs. 7 to 13 show each in a cross section a further modified construction of the rim with the parts assembled.

The rim shown in Figs. l to G comprises a ring a with side flange b adapted to be fixed to the felloe of a vehicle wheel or to the spokes thereof by means not shown in thcdrawing. The ring a is provided With a circumferential groove c. At the outer side of said groove c a ridge d is formed having notches or recesses e of equal size and at equal distances apart from each other and reaching to the base of the roove c. The rim comprises :t'urther a detac able side flange j' having projections 7i and recesses Z corresponding in size and number to the recesses e and projections (Z of the ring e. The side flange f may be fitted to the ring a, by passing the projections lay through the recesses c and by partly turning the side flange f circumferentially, the. projections h passing in the groove 0 are brought behind the projections (l of ring (i, the two parts o and f being interlocked. The part f is provided with an outwardly pro-` jecting flange g. Between the flanges b and g the casing of a pneumatic tire is held; the

casing pressing on said flanges L and g keeps the side flange f firmly on the ring a. The abutting faces (,l" and h of the projections el and It are bevelled. The side flange f is provided with considerable radial play, its interior diameter being somewhat greater than the exterior diameter of the rim a. 1f the pneumatic tire expands the casing which may be an armored casing it presses the flanges Z), g apart and the side flange member assumes under the pressure exerted by the tire a position truly concentric with the ring meinber o2. Friction between the tire casing and the flanges L, g, retains the flange member f 1n' place. To further retain the parts a and f* in their locking position and in accordance with a modification of the invention as shown in Fig. 5, a split spring ring 11 may be provided which is arranged in a groove formed bv the mljacent walls c and f of the ring a2 and of an inwardly projecting flange wof the side flange f. The ends p', p" of the split ring p (Fig. (i) are bent outwardly and engage recesses p provided in the ring a and the side flange f. The split ring p closes the gap between the parts a2 and f4 preventing the access of water and dirt into the joint and moreover locks the side flange f, in its position on the rim a2.

It is a Well known fact that the covers of the pneumatic tires adhere very firmly to the metal parts of the rim and a dismounting of a tire presents often very considerable difficulties. To get the tire loose without hard manual work or Without auxiliary devices or tools the split ring p is removed and the car is run under load for a distance. The side flange f having radial play as before stated works loose under the strain of the tire and .may be removed without difficult Screws 7c are provided to secure the si e flane f in its locking position, in the form of tiie invention shown in Figs. 1 to 4. The

means to lit the ring (L to a telloe are not shown and may be niade in any well `known manner.

As shown in Fig. 7 the flanges enibracing the tire casing ina'y be made as separate ineinbers. The annular nieinber 0 which in practice is attached to the telloe of a vehicle Wheel is provided with an outwardly projecting ridge 0 having a bevelled face o en which a side flange fm rests. The side flange coinprises tivo parts, the locking ring f* beingI constructed and o peratinl as described above and the side tlange ring In, for mounting or dis-mounting the ring f is not in Contact with the rubber and runs on inetal faces only. It can theretore be .moved easily in and out oi its locking position.

Fig. 8 shows a nio' lcd construction. The annular,tire-carrying inelnber 0 is provided With the groove c and the projections d. The removable side flange o having the projections k (enga-ging the projections d) 1s provided with bores y and ribs i0 by ineans of which the side flange fr lnay be turned by a suitable tool.

The projections on the ring` 05 may be made as shown in Fig'. 9. The projections g ex tend in axial direction and the removable side flange fr is provided With sidewardly protruding projections r' engaging the projections g. The side flange r is iitted on the rini o5 in the saine manner as described with reference to Figs. 1 to 4l.

To close the gap between the side flange s and the ring 04 (as shown in Fig'. 10) a ring u of sheet metal may be used which may be fixed to the ringl 0. Dirt, etc., are prevented ifroin getting 'into the gap in larger quantities.

Figs. 1l to 13 show diill'erent shapes of the protectingY sheet metal ring u, the shape ot which alters with the position ot' the gap.

The {lange f7 sliownin Fi 1l may be done away with as shown in F ig. 'l2 and one shank o;t' the protective ringr u running in radial direction is close to the outer i'aces ot the projections (Z.

Fig. 13 illustrates the torni oit the ri ng u in connection with the removable side flange havn l; a flange projecting; inwardly. The gap 1s well closed and no dirt can collect in the gap which on hardeniner Would increase the diliicnltics to reinove the `de llanjfe if".

lVhat l Vwish to secure by l). S. Letters Patent is l. A rin] for vehicle Wheels comprising in coinbination a ring; adapted to be lixed to the vrhccl body, a radially projecting,r flange running,Y along one of the edi), of said ring', a groove running along the other edge ot said ring, projeetions arranged along; the second said edge at equal distances apart, a side flange, inwardly protrudiner projections on said sido iange, engaging the projections ot the said ring, said side flange `having play on the ring' in radial ("lirection the contacting faces ol ring,Y and side llange beiner bevelled, a split spring ring beingf provideiil to close the gap betvveen the ring and the side flange.

2. A riin for vehicle wheels comprising in combination a ring,r adapted to be iixed to the wheel body, a radially projecting flange run ning along one olf' the edges of said ring, a groove running along the other edge et said ring, projeetions arranged along the second said edge at equal distances apart, a side tiange, inwardly protrudingr projections on said side fiange engaging the projections oil the said ring, said side flange havingr play on the ring.;r in radial direction, the eontaeting faces of ringr and side `flange being bevelled, a split spring ring being' provided to close the gap between the rin g and the side flange, said split ring,r being provided with noses engaging cavities of ring' and side flange and loeliine' these parts in their relative positions.

In Vwitness wliereot fl allix iny signature.

ALBERT F URRER. 

